LOL, of course “A Clockwork Orange” forever ruined “Singin’ In the Rain” for me.
That song was absent from the novel.
Another notable change from the novel was Georgie being a policeman after Alex was released from prison after the Ludovico technique brainwash; in the book, Georgie was killed during a botched robbery while Alex was still in prison, and the policeman with Dim was Billyboy. (Alex also committed another murder while in prison; he killed a fellow inmate who tried to rape him.)
And I can't hear 'Stuck in the Middle With You' without thinking of a guy getting his ear sliced off with a straight razor.